Audited Supplier
Design principle:Hunan Wofly's DCOS11 series semi-automatic conversion system is suitable for continuous gas supply, and the exhaust at one end is automatically switched to the other end. The priority air source can be selected by turning the switch handle. Each diaphragm valve inlet can be connected with a gas cylinder. If a gas manifold is used at the inlet end, two or more gas cylinders may be connected to each inlet end.
Clean process
The product is cleaned and packaged in accordance with AST G93 Class C cleaning requirements.
BA-grade: Product Surface roughness reached Ra 0.25 um and can be applied to gases below 6N purity.
Cleaning for oxygen (O2): It can provide cleaning and packaging specifications for products used in an oxygen environment, which meets the cleaning requirements of ASTMG93 C. When ordering, please add -O2 after the ordering number.
| Specification | |
| Maximum inlet pressure | 3500psig |
| Outlet pressure range | 85~115,135~165,185~215,235~265psig |
| Working temperature | -40ºC~+74ºC(-40ºF~+165ºF) |
| Leakage rate(Helium) | Internal : ≤1×10^-7 mbar.l/s External : ≤1×10^-9 mbar.l/s |
| Flow coefficient | Pressure reducing valve Cv=0.09 Diaphragm valve Cv=0.2 |
| Valve body port | Inlet:1/4NPT Outlet:1/4NPT |
| Pressure gauge port | 1/4NPT thread |
| Main Structure Materials | ||
| No. | Component | Material |
| 1 | Valve Body | Stainless Steel 316L |
| 2 | Valve Seat | PCTFE (Polychlorotrifluoroethylene) |
| 3 | Diaphragm | Hastelloy |
| 4 | Filter Element | 316L Stainless Steel |
| Product model | Valve body material | Inlet pressure P1 | Outlet pressure range P2 | Inlet/Outlet Port | Accessories options | Clean Process |
6L-316LStainless steel HC-Hastelloy C-276 | 35-3500 PSIG | 100-85~115 PSIG 150-135~165 PSIG 200-185~215 PSIG 250-235~265 PSIG | 00-1/4" NPT female thread 01-1/4" NPT male thread 10-1/4" Ferrule connector 11-3/8" Ferrule connector HC -CGA Number(USA) HDIN_-DIN Number (Gemany) For otherports, please contact HunanWofly technicians. | No requirement P-Outlet equipped with pressure sensor R-Outlet equipped with Relief valve | Standard (BA) O2-Cleaning for oxygen |
| Product Features | |
| 1. | Suitable for continuous gas supply, one end is exhausted and automatically switched to the other end. |
| 2. | With air source priority selection handle, you can set the priority air supply. |
| 3. | The WR11 pressure reducing valve is used as the prototype valve, which can be used for corrosive and toxic gases. |
| 4. | The WV4H diaphragm valve is used as the prototype valve with two three-way valves and fewer connections |
| 5. | There is a 20μm filter element in the inlet. |
| 6. | Oxygen environment application options are available. |
| 7. | The output pressure is in a certain range,which has been set before delivery. |
DCOS11 series semi-automatic changeover system is mainly composed of an adjustable outlet pressure reducing valve and a fixed outlet pressure reducing valve.
1. When both air inlets are open, turn the handle, and the side pointed by the arrow will become the first air source.
As shown in Figure 1, when the arrow points to the B side, the B side gas source supplies gas, because the fixed output pressure of the B side pressure regulator is higher than the set pressure of the A side pressure regulator, so that the diaphragm of the A side pressure regulator is separated from the valve core and the valve is closed.
2. As shown in Figure 2, if the gas supply on side A is selected, it is necessary to turn the handle clockwise until the arrow of the handle points to side A. At this time, because the set pressure of the A-side pressure regulator is higher than the fixed output pressure of the B-side pressure regulator, the diaphragm of the B-side pressure regulator is separated from the valve core, and the valve is closed.
3. When the gas supply on one side is exhausted, the gas supply will automatically switch to the other side.
As shown in Figure 1, when the gas source on the B side supplies gas, the pressure is insufficient until the pressure of the gas source on the B side is lower than the set pressure on the A side, the valve on the A side opens under the action of the spring, and the gas source on the A side starts to supply gas, as shown in Figure 3. At the same time, the gas on the A side can flow back to the B side.At this time, if the gas source on the B side is replaced, rotate the pointing handle to the A side, then close the stop valve and open the relief valve to release the residual pressure, and then replace the new gas source. After replacing the new gas source, if the handle is not rotated, the A side will continue to supply gas. If you want to supply gas to side B, please turn the handle and point to side B.
Export packing standard:Double plastic bags with internal vacuum and external plastic sealing+corrugated carton+ cardboard boxes+wooden pallet
Selling Units: Single item
Single package size: 30 X 30 X 30 cm
Single gross weight: 3 kg
1. LOGO
Processing technic:Lathe engraving on the valve body
Price increase for each product: $ 1 USD
MOQ=1 pc
2. Package
Processing technic:As requested
Price increase for each product: $ 1 USD
MOQ=10pcs
Wofly specialized in manufacturing EP-grade,BA-grade diaphragm valve,pressure regulators,instrument valves, needle valves, hydrogen energy valves, liquid injection valves, check valves, filters, measuring devices, VCR micro-welding fittings, ultra-high purity joints and special gas equipment (GC/GR/VMB/VMP/VDB/VDP), automatic switching, gas manifold, etc.
Products have been widely used in semiconductor , solar photovoltaic ,Integrated circuit, microelectronics, hydrogen energy, lithium battery, lab, LCD/LED panel, CVD/PVD, Optical fiber, biological food engineering, pharmaceutical, petrochemical, power generation,shipbuilding and other fields.
1. Clean workshop
Clean workshop assembly: All products have been assembled in class 100 and class 1000 clean workshops, and 100% of them have passed the helium seal test and functional test before leaving the factory.
At present, Wofly has built class 100 (over 100m2) and class 1000 (over 500m2) dust-free workshops.
2. Machining workshopWofly is different from those companies whose spare parts are provided by suppliers and assembled by themselves. All the accessories of Wofly are produced by ourselves, with strict quality control and unified quality standards. Accurate and advanced equipment is adopted to ensure the accuracy and cleanliness requirements of products.
3. Company Exhibition Hall and Front Desk
4. Attend the exhibition photos
